• (n.) The office of an adjutant. • (n.) Skillful arrangement in aid; assistance.
Ad'ju·tan·cy noun [ See Adjutant .] 1. The office of an adjutant. 2. Skillful arrangement in aid; assistance. « It was, no doubt, disposed with all the adjutancy of definition and division. Burke. » 
adjutancy 1. Skillful arrangement in aid; assistance. 2. The office of an adjutant: 'His position as an adjutancy allows him certain privileges which probably would not exist otherwise.'
The office or rank of an adjutant: His adjutancy allows him certain privileges.